window.innerHeight ie8 alternative

Question

I have some calculations that rely on window.innerHeight. But as I have found out this is not available in any IE before IE9. All the other options I have look

Answer 1

I made a simple shim for IE8 and others:

• window.innerWidth
• window.innerHeight
• window.scrollX
• window.scrollY
• document.width
• document.height

559 bytes

(function(d,b){var c=b.documentElement;var a=b.body;var e=function(g,h,f){if(typeof g[h]==="undefined"){Object.defineProperty(g,h,{get:f})}};e(d,"innerWidth",function(){return c.clientWidth});e(d,"innerHeight",function(){return c.clientHeight});e(d,"scrollX",function(){return d.pageXOffset||c.scrollLeft});e(d,"scrollY",function(){return d.pageYOffset||c.scrollTop});e(b,"width",function(){return Math.max(a.scrollWidth,c.scrollWidth,a.offsetWidth,c.offsetWidth,a.clientWidth,c.clientWidth)});e(b,"height",function(){return Math.max(a.scrollHeight,c.scrollHeight,a.offsetHeight,c.offsetHeight,a.clientHeight,c.clientHeight)});return e}(window,document));

For updates, take a look at this gist: yckart/9128d824c7bdbab2832e

(function (window, document) {

  var html = document.documentElement;
  var body = document.body;

  var define = function (object, property, getter) {
    if (typeof object[property] === 'undefined') {
      Object.defineProperty(object, property, { get: getter });
    }
  };

  define(window, 'innerWidth', function () { return html.clientWidth });
  define(window, 'innerHeight', function () { return html.clientHeight });

  define(window, 'scrollX', function () { return window.pageXOffset || html.scrollLeft });
  define(window, 'scrollY', function () { return window.pageYOffset || html.scrollTop });

  define(document, 'width', function () { return Math.max(body.scrollWidth, html.scrollWidth, body.offsetWidth, html.offsetWidth, body.clientWidth, html.clientWidth) });
  define(document, 'height', function () { return Math.max(body.scrollHeight, html.scrollHeight, body.offsetHeight, html.offsetHeight, body.clientHeight, html.clientHeight) });

  return define;

}(window, document));